AAT1150IKS-1.0-T1 AnalogicTech, AAT1150IKS-1.0-T1 Datasheet

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General Description The AAT1150 SwitchReg™ step-down switch- ing converter ideal for applications where high effi- ciency, small size, and low ripple are critical. Able to deliver 1A with internal power MOSFETs, the current-mode controlled IC provides high efficiency ...

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Pin Descriptions Pin # Symbol Function 1 FB Feedback input pin. This pin must be connected to the converter’s output used to set the output of the converter to regulate to the desired value. 2 SGND Signal ground. ...

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Absolute Maximum Ratings T = 25°C, unless otherwise noted. A Symbol Description VCC GND GND GND GND EN T Operating Junction Temperature ...

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Electrical Characteristics 5V -40°C to +85°C, unless otherwise noted. Typical values are Symbol Description V Input Voltage Range IN V Output Voltage Tolerance OUT ΔV (V ...

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Typical Characteristics Efficiency vs. Output Current (V = 1.5V) OUT 100 2. 4. 100 Output Current (mA) High Side R vs. Temperature DS(ON) 170 3.6V 150 2.7V 130 110 5.5V 4. ...

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Typical Characteristics Oscillator Frequency Variation vs. Supply Voltage 3.5 2.5 1.5 0.5 -0.5 -1.5 2.5 3 3.5 4 Supply Voltage (V) Output Voltage vs. Temperature (I = 900mA 1.5V) OUT OUT 1.0 0.6 0.2 -0 3.6V ...

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Typical Characteristics Efficiency vs. Input Voltage (V = 1.5V) OUT 100 0. 2.5 3 3.5 4 Input Voltage (V) No Load Input Current vs. Temperature ( ...

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Typical Characteristics Output Ripple (V = 3.6V 1.5V OUT V OUT 5mV/div BW = 20MHz LX 2V/div Time (500ns/div) Output Ripple (V = 5.0V OUT V OUT 5mV/div BW = 20MHz LX 2V/div Time ...

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Functional Block Diagram 1.0V REF FB Applications Information Control Loop The AAT1150 is a peak current mode buck con- verter. The inner wide bandwidth loop controls the peak current of the output inductor. The output inductor current is sensed through ...

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Power and Signal Source Separate small signal ground and power supply pins isolate the internal control circuitry from the noise associated with the output MOSFET switch- ing. The low pass filter R1 and C3 in schematic Figures 1 and 2 ...

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Inductor The output inductor is selected to limit the ripple current to some predetermined value, typically 20% to 40% of the full load current at the maximum input voltage. Manufacturer's specifications list both the inductor DC current rating, which is ...

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The equation for the RMS current in the input capacitor is: ⎛ V ⋅ O ⋅ RMS O ⎝ The input capacitor RMS ...

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Figure 4: AAT1150 Evaluation Board Layout Top Layer 3. 10μF Figure 6: 3.3V to 1.25V Converter (Adjustable Output). 1150.2006.09.1.5 1MHz 1A Step-Down DC/DC Converter R3 AAT1150-1.0 2.55k 100 R4 VCC 10k 1% ...

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Design Example Specifications I = 1.0A OUT I = 30% of Full Load at Max V RIPPLE V = 1.5V OUT V = 2.7V to 4.2V (3.6V nominal 830kHz s Maximum Input Capacitor Ripple ⎛ ⎞ V ...

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AAT1150 Dissipation 2 ⋅ ⋅ ⋅ DS(ON)H O DS(ON ⋅ ⋅ (0.14Ω 1.5V + 0.145Ω (3.6V - 1.5V)) = 3.6V + Θ ⋅ 85°C ...

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... MSOP-8 HYXYY MSOP-8 KAXYY MSOP-8 KCXYY MSOP-8 HZXYY MSOP-8 1.95 BSC PIN 1 3.00 ± 0.10 10° ± 5° 0.075 ± 0.075 0.30 ± 0.08 0.65 BSC AAT1150 Part Number (Tape and Reel) AAT1150IKS-1.0-T1 AAT1150IKS-1.5-T1 AAT1150IKS-1.8-T1 AAT1150IKS-2.5-T1 AAT1150IKS-3.3-T1 4° ± 4° 0.60 ± 0.20 0.254 BSC 0.155 ± 0.075 1150.2006.09.1.5 3 ...

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... AnalogicTech cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in an AnalogicTech product. No circuit patent licenses, copyrights, mask work rights, or other intellectual property rights are implied. AnalogicTech reserves the right to make changes to their products or specifications or to discontinue any product or service without notice. ...